Want a faster way to reply to a conversation in Messages? If you see a Messages notification on the Lock screen of your iPhone 6s or later, press and hold on it to expand it into an interactive box where you can reply without unlocking your iPhone or navigating into the Messages app. It’s perfect for those sporadic conversations where the iPhone goes back into your pocket or purse after each reply. (On an iPad or older iPhone, you’ll have to slide left on a Lock screen notification and unlock the device to open the Messages app.)